Add unsupported config option and internal API to simplify remote item matching

This is important for 1.21.5 servers/clients and non-Vanilla clients that may not be able to match 1.21.5 data hashes anymore

paper-server/src/main/java/io/papermc/paper/configuration/GlobalConfiguration.java

@@ -186,6 +186,8 @@ public class GlobalConfiguration extends ConfigurationPart {
         public CompressionFormat compressionFormat = CompressionFormat.ZLIB;
         @Comment("This setting controls if equipment should be updated when handling certain player actions.")
         public boolean updateEquipmentOnPlayerActions = true;
+        @Comment("Only checks an item's amount and type instead of its full data during inventory desync checks.")
+        public boolean simplifyRemoteItemMatching = false;
 
         public enum CompressionFormat {
             GZIP,